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feat(spi_master): support dma transfer with psram directly

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This commit is contained in:
Wan Lei
2025-12-15 15:59:04 +08:00
committed by wanckl
parent 6759fbfa52
commit 4adf8aecce
20 changed files with 328 additions and 123 deletions
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components/esp_driver_spi/include/driver/spi_master.h
+6
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@@ -103,6 +103,7 @@ typedef struct {
*/
} spi_device_interface_config_t;
// Input flags
#define SPI_TRANS_MODE_DIO (1<<0) ///< Transmit/receive data in 2-bit mode
#define SPI_TRANS_MODE_QIO (1<<1) ///< Transmit/receive data in 4-bit mode
#define SPI_TRANS_USE_RXDATA (1<<2) ///< Receive into rx_data member of spi_transaction_t instead into memory at rx_buffer.
@@ -116,6 +117,11 @@ typedef struct {
#define SPI_TRANS_MODE_OCT (1<<10) ///< Transmit/receive data in 8-bit mode
#define SPI_TRANS_MULTILINE_ADDR SPI_TRANS_MODE_DIOQIO_ADDR ///< The data lines used at address phase is the same as data phase (otherwise, only one data line is used at address phase)
#define SPI_TRANS_DMA_BUFFER_ALIGN_MANUAL (1<<11) ///< By default driver will automatically re-alloc dma buffer if it doesn't meet hardware alignment or dma_capable requirements, this flag is for you to disable this feature, you will need to take care of the alignment otherwise driver will return you error ESP_ERR_INVALID_ARG
#define SPI_TRANS_DMA_USE_PSRAM (1<<12) ///< Use PSRAM for DMA buffer directly, has speed limit, but no temp buffer and save memory
// Output flags
#define SPI_TRANS_DMA_RX_FAIL (1<<30) ///< RX transaction data lose flag, indicate DMA RX overflow
#define SPI_TRANS_DMA_TX_FAIL (1<<31) ///< TX transaction data lose flag, indicate DMA TX underflow
/**
* This structure describes one SPI transaction. The descriptor should not be modified until the transaction finishes.